ID
ID is the automatic identification of target returns based on the strength of the returned signal and other factors. Three options are available: ID "On" displays targets as one of three different size fish symbols.
Assuming the dual beam transducer is selected, these fish symbols can be either hollow, indicating that the target is detected in the wide beam only, or solid, indicating that the target is detected in the narrow beam, and is located directly under the boat.
"ID+", the default setting, provides more information about the location of the target by attaching depth "strings" showing the digital depth of the target. When there are numerous targets